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Citation: SONG Huan-Ling, CHEN Ge-Xin, LIU Jun-Sheng, LI Mei, LUO Shu-Wen, LI Gui-Yu. Influence of Vapor on Ethane Oxidative Dehydrogenation over Mn-Na₂WO₄/SiO₂ Catalyst[J]. Chinese Journal of Applied Chemistry, ;2000, 17(3): 284-287. shu

Influence of Vapor on Ethane Oxidative Dehydrogenation over Mn-Na₂WO₄/SiO₂ Catalyst

1.
Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000

Received Date: 25 October 1999
Available Online: 21 February 2000
Fund Project:

The influences of vapor on the oxidative dehydrogenation of ethane(ODHE) to ethylene over promoted Mn-Na₂WO₄/SiO₂ catalyst have been investigated. The results indi cate that the presence of vapor is favorable for catalyst to increase the ethylene selectivity. Ethylene in yield up to 52% is obtained under conditions of: V (C₂H₆): V (O₂): V (H₂O, g)= 1:0.65:3.8, GHSV=1600 h^-1, 740℃ with 10 mL catalyst. Excess vapor caused the catalyst selectivity to be decreased. The results are discussed in terms of destruction of W-O-Si species and phase transformation based on the XRD and XPS measurements.
- Na₂WO₄,
- Mn₂O₃,
- ethane,
- oxidative dehydrogenation
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沈阳化工大学材料科学与工程学院沈阳 110142

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Influence of Vapor on Ethane Oxidative Dehydrogenation over Mn-Na₂WO₄/SiO₂ Catalyst